Author:
Adams M. L.,Cook S.,Bowden J. W.
Abstract
A field-scale experiment was conducted to determine the ability of a
deterministic model developed for Western Australian wheat farmers to guide
site-specific applications of nitrogen fertiliser. The results indicated that
site-specific information of achievable yield improved the prediction accuracy
much more than information about soil nitrogen — even though the
latter was more costly to acquire. When applied together, these sources of
information improved the prediction accuracy of the model markedly, explaining
about half of the variation of yield response to nitrogen. However, the model
failed to explain a substantial portion of site-specific variation, even with
this intensity of information. This failure indicates the difficulty of
representing complex biological systems with simple functional models.
Subject
General Agricultural and Biological Sciences
Cited by
15 articles.
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